diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e321238..cdd9140 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,12 +37,14 @@ jobs:
       fail-fast: false
       matrix:
         toolchain:
-          - "1.81"
           - stable
           - nightly
         versions:
           - ""
           - "-Zminimal-versions"
+        include:
+          - toolchain: "1.81"
+            versions: "-Zminimal-versions"
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -121,9 +123,13 @@ jobs:
 
       - name: Test (tzdb)
         run: cargo miri test --workspace --all-targets
+        env:
+          MIRIFLAGS: "-Zmiri-disable-isolation"
 
       - name: Test (testing)
         run: cd testing && cargo miri test --workspace --all-targets
+        env:
+          MIRIFLAGS: "-Zmiri-disable-isolation"
 
   cross-miri:
     runs-on: ubuntu-latest
@@ -151,6 +157,8 @@ jobs:
 
       - name: Test
         run: cargo miri test --workspace --target ${{ matrix.target }}
+        env:
+          MIRIFLAGS: "-Zmiri-disable-isolation"
 
   doc:
     runs-on: ubuntu-latest
diff --git a/Makefile b/Makefile
index a84ae54..462642b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 .DELETE_ON_ERROR:
 
-TZDB_VERSION := tzdb-2025b
+TZDB_VERSION := tzdb-2025c
 
 tzdb_data/src/generated/mod.rs: tmp/${TZDB_VERSION}/usr/share/zoneinfo/ tzdb.tar.lz.sha
 	cd make-tzdb && cargo r -- ../$(@D) ../$< ../tzdb.tar.lz.sha
diff --git a/tzdb.tar.lz.sha b/tzdb.tar.lz.sha
index 6260078..97ba7cf 100644
--- a/tzdb.tar.lz.sha
+++ b/tzdb.tar.lz.sha
@@ -1 +1 @@
-4f4afca86645ca5564a9d7d3ddc36e6b07c15c1b87cd4edbbcae72c6be4e6154e4ad1966407a7081237550301f1093af53dd8a486effb95f7cf3e5721db47c8f  tmp/tzdb-2025b.tar.lz
+6fa233d6a884acd24b52c44b2eecf683f9403f44b39dcbe85b1ec92fc11f4daf6ee5143f05332faf9258b8bd8f7ca7d4882e19b1e3d892b4761be43fd4f39d51  tmp/tzdb-2025c.tar.lz
diff --git a/tzdb/Cargo.toml b/tzdb/Cargo.toml
index a85201a..a13c525 100644
--- a/tzdb/Cargo.toml
+++ b/tzdb/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tzdb"
-version = "0.7.2"
+version = "0.7.3"
 edition = "2021"
 authors = ["René Kijewski <crates.io@k6i.de>"]
 repository = "https://github.com/Kijewski/tzdb"
diff --git a/tzdb/src/lib.rs b/tzdb/src/lib.rs
index e0ac94d..a0d7c28 100644
--- a/tzdb/src/lib.rs
+++ b/tzdb/src/lib.rs
@@ -14,7 +14,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 #![allow(unknown_lints)]
 #![forbid(unsafe_code)]
 #![warn(absolute_paths_not_starting_with_crate)]
diff --git a/tzdb_data/Cargo.toml b/tzdb_data/Cargo.toml
index 3aa337a..e2263b5 100644
--- a/tzdb_data/Cargo.toml
+++ b/tzdb_data/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tzdb_data"
-version = "0.2.2"
+version = "0.2.3"
 edition = "2021"
 authors = ["René Kijewski <crates.io@k6i.de>"]
 repository = "https://github.com/Kijewski/tzdb"
diff --git a/tzdb_data/src/generated b/tzdb_data/src/generated
index e2c3697..29b7194 160000
--- a/tzdb_data/src/generated
+++ b/tzdb_data/src/generated
@@ -1 +1 @@
-Subproject commit e2c36974c2bd23f062aee60ff8133726d7d1a1a9
+Subproject commit 29b71945b1a8cad63f82c46d7ec57b4fb40aa82a